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/*
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright © 2022 Keith Packard
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
int
main(void)
{
printf("executing invalid instructions\n");
/*
* ARM architecture reference says these are mostly reserved for
* undefined instructions and should raise exceptions
*/
#ifdef __arm__
#ifdef __thumb__
__asm__(".inst.n 0xde00");
#else
__asm__(".inst 0xe7f000f0");
#endif
#elif defined(__riscv)
__asm__(".word 0x00000000");
#elif defined(__aarch64__)
__asm__(".word 0x00000000");
#elif defined(__RX__)
__asm__(".word 0xffffffff");
#elif defined(__x86_64__) || defined(__i386__)
__asm__("ud2");
#elif defined(__m68k__)
/* 0x4afc is reserved for customer use to take an illegal instruction trap */
__asm__(".word 0x4afc");
#elif defined(__loongarch__)
__asm__(".word 0x00000000");
#else
#define NO_INVALID
#endif
#ifdef NO_INVALID
printf("no invalid instruction defined for target\n");
return 77;
#else
printf("ERROR: invalid instruction worked\n");
return 0;
#endif
}
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